Extracellular Water (ECW)

Water volume outside the body cell mass (i.e; water in “inactive” cells of the body)

Extracellular water is the water volume outside the body cell mass. When the body becomes toxic it will flush water out of the ICW (inside the cells) into the ECW to dilute toxicity resulting in an increased ECW reading. It is best to have a higher ICW and a lower ECW ratio.